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https://gitlab.uni-freiburg.de/opensourcevdi/spice
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2db7212175
spice client and spice server shares code from
common/{gdi,gl,sw}_canvas.[ch]. However, while most of the code is
shared, the server code wants a canvas compiled with
SW_CANVAS_IMAGE_CACHE defined while the client code wants a canvas
compiled with SW_CANVAS_CACHE.
The initial autotools refactoring didn't take that into account,
this is now fixed by this commit. After this commit, the canvas
files from common/ are no longer compiled as part of the
libspice-common.la convenience library. Instead, there are "proxy"
canvas source files in client/ and server/ which #include the
appropriate C files after defining the relevant #define for the
binary that is being built.
To prevent misuse of the canvas c files and headers in common/,
SPICE_CANVAS_INTERNAL must be set when including the canvas headers
from common/ or when building the c files from common/ otherwise
the build will error out.
93 lines
2.3 KiB
C++
93 lines
2.3 KiB
C++
/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
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/*
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Copyright (C) 2010 Red Hat, Inc.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _H_JPEG_DECODER
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#define _H_JPEG_DECODER
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#include "common.h"
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#include "red_canvas_base.h"
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#ifdef WIN32
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/* We need some hacks to avoid warnings from the jpeg headers */
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#define XMD_H
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#undef FAR
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#endif
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extern "C" {
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#include <jpeglib.h>
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}
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class RGBConverter {
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public:
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virtual ~RGBConverter() {}
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virtual void convert(uint8_t* src, uint8_t* dest, int width) = 0;
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};
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class RGBToBGRConverter : public RGBConverter {
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public:
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void convert(uint8_t* src, uint8_t* dest, int width)
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{
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for (int x = 0; x < width; x++) {
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*dest++ = src[2];
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*dest++ = src[1];
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*dest++ = src[0];
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src += 3;
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}
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}
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};
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class RGBToBGRXConverter : public RGBConverter {
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public:
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void convert(uint8_t* src, uint8_t* dest, int width)
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{
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for (int x = 0; x < width; x++) {
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*dest++ = src[2];
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*dest++ = src[1];
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*dest++ = src[0];
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*dest++ = 0;
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src += 3;
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}
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}
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};
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class JpegDecoder : public SpiceJpegDecoder {
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public:
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JpegDecoder();
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~JpegDecoder();
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void begin_decode(uint8_t* data, int data_size, int& out_width, int& out_height);
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/* format is SPICE_BITMAP_FMT_<X> for the dest; currently, only
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x=32BIT and x=24BIT are supported */
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void decode(uint8_t* dest, int stride, int format);
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private:
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struct jpeg_decompress_struct _cinfo;
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struct jpeg_error_mgr _jerr;
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struct jpeg_source_mgr _jsrc;
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uint8_t* _data;
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int _data_size;
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int _width;
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int _height;
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RGBToBGRConverter _rgb2bgr;
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RGBToBGRXConverter _rgb2bgrx;
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};
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#endif
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